High-precision calibration for temperature and density g/cm³ F K C DAkkS Calibration Laboratory for Temperature and Density Accredited DAkkS laboratory (D-K-15223-01-00) for temperature and density measurements
Our range of services Fixed-point calibration of Resistance thermometers Ludwig Schneider is one of the worldwide leading manufacturers of precision measuring instruments for temperature and density. Based on this experience, Ludwig Schneider Messtechnik GmbH (LSM) has for over 20 years been offering temperature calibration services and since the end of 2005 has been Germany s first privatesector company possessing DKD/DAkkS accreditation for density with respect to hydrometers. In-depth consultancy As one of the internationally most renowned calibration laboratories, LSM has innovative laboratory equipment, calibration systems of the utmost precision, plus highly qualified and experienced staff able to offer customers reliable service. Independent of any specific manufacturers, the services available from LSM cover a broad spectrum of temperature measuring instruments and an especially wide range of temperatures with extremely low uncertainties. International clients from biotechnological, chemical, pharmaceutical, oceanographical and food industrial sectors value highly LSM s calibration services. Comparative measurements of Resistance thermometers, Thermocouples, Liquid-in-glass thermometers, Temperature indicators, Temperature block calibrators Adjustment of digital/analog Measured data acquisition systems Acquisition of specific constants on the basis of ITS-90 deviation functions, Van Dusen equations, Polynomial functions Documentation of calibration results for temperature and density: DAkkS calibration certificates, Manufacturers test certificates, Conformity statements, Compliance with QM codes and standards (DIN, ASTM, BS, IEC, etc.)
DAkkS Calibration Laboratory for Temperature Comprehensive calibration service for temperature measuring instruments The use of temperature sensors depends on a variety of factors: measuring range, stability, response, and measuring uncertainty, etc. For use in laboratories and quality assurance environments we supply a complete lineup of measured data acquisition systems along with the baths, standard thermometers, block calibrators, etc. DAkkS accredited measuring uncertainties for the measured unit temperature Measured unit/ Calibration object Resistance thermometers Resistance thermometers, Direct indicating electrical thermometers, Mechanical thermometers, Liquidin-glass thermometers, Temperatureindicators and simulators for resistance thermometers Range/ Fixed points ( C) Method of Measuring Smallest measurable uncertainty* 0.00 Ice point 5.0 mk 0.010 Water triple point 2.0 mk 29.7646 Gallium melting point 2.5 mk -196 in liquid nitrogen 50 mk -90 to 0 im Cryostat 20 mk >0 to 250 in water bath/oil bath 10 mk >250 to 500 in salt bath 50 mk >500 to 660 0.10 K Remarks Calibration at fixed points SPRTs or standard Liquid-in-glass thermometers We can also provide technical support in selecting and using temperature sensors for industrial processes (plant and machinery construction, etc.). We recommend technically reasonable and cost-efficient recalibration intervals depending on such factors as maximum application temperature, use frequency, and other empirical data. Whatever your needs, we can come up with a suitable solution. Ludwig Schneider Messtechnik is accredited under DAkkS registration number D-K-15223-01-00. Precious metal (TCs), Temperature indicators and simulators for Non-precious metal (TCs) Transformers with connected resistance thermometers 0 to 100 in calibration bath 100 to 500 0.5 K 500 to 1000 1.0 K 1000 to 1200 in furnace 1.5 K 1200 to 1300 2.0 K -90 to 300 in calibration bath 0.5 K 300 to 600 1.0 K 600 to 1000 1.5 K 1000 to 1200 in furnace 2.0 K 1200 to 1300 3.0 K -196 in liquid nitrogen -90 to 0 in Cryostat >0 to 250 in water bath/oil bath >250 to 500 in salt bath >500 to 660 SPRTs or SPRTs or U PRT + 0,10 K ** Liquid-in-glass thermometers Transformers with connected 0 to 100 in calibration bath 100 to 500 500 to 1000 1000 to 1200 in furnace 1200 to 1300 U TE + 0.50 K ** SPRTs or Temperature block calibrators -30 to 133 0.20 K >133 to 660 1.5 mk t/ C SPRTs*** 0 to 660 1.5 K 660 to 1000 2.5 K 1000 to 1300 4.5 K * The smallest definable measuring uncertainties are determined according to DKD-3 (EA-4/02). These are extended measuring uncertainties with a covering probability of 95% and have, if there are no other indications, the extension factor k=2. Measuring uncertainties without indication of unit, are on the measured value referred relative values, if no other indications. ** The single measuring uncertainty of the calibration of a resistance thermometer (U PRT ) or a thermocouple (U TE ). *** t = measured unit in C
DAkkS Calibration Laboratory for Density and Content Comprehensive calibration service for density and content measuring instruments LSM is calibrating according to the buoyancy system (Cuckow method of measurement). Developed by experienced engineers this most precise calibration unit, fitted with innovative sensor technology, reliably determins all required parameters. DAkkS accredited measuring for Density and Content Calibration object Density Hydrometers, Sinkers Content Alcoholometers Content Saccharimeters Range Method of Measuring 450 to 2000 kg/m³ Buoyancy system (Cuckow method) 0 to 100 % Buoyancy system (Cuckow method) 0 to 70 % Buoyancy system (Cuckow method) Smallest measurable uncertainty 0.04 kg/m³ Table 4.02/01-2 Listing of accredited calibration objects for density and content measurements Remarks 0.02 % No relative measuring tolerances 0.01 % No relative measuring tolerances Ludwig Schneider Messtechnik is accredited under DAkkS registration number D-K-15223-01-00 for density measurements within the range of 450 up to 2000 kg/m 3.
LSM offers a Comprehensive Service Range On-site calibration Calibration and alignment of climate chambers Testing of tempering units (muffle furnaces, refrigerators, furnaces) Calibration of temperature sensors in block calibrators Calibration at temperature laboratory Fixed-point calibration of Resistance thermometers Comparison measurement from -196 C to 1300 C (resistance thermometers,, glass thermometers, temperature indicators, dial thermometers) Calculation of specific constants (IEC 751, ITS-90, n-polynom) Calibration of surface sensors up to 500 C Calibration of Pt resistance sensors Alignment and calibration of simulators, indicators and block calibrators Batch testing of thermo wires Calibration of infrared thermometers Calibration of portable and stationed radiation pyrometer Contact less temperature measurement from -30 C to 1600 C Testing of black bodies Development and manufacturing of test and calibration devices Temperature and surface measurement technology Calibration Systems e.g. testing machines for welded and bonded packages (blister packs). Calibration at density laboratory For refinaries, breweries, dairies, must manufacturing etc. Buoyancy system (Cuckow method): Hydrometers Alcoholmeters Saccharimeters
Consultation and Training, International Experience 1084.62 C 1357.77 K Copper freezing point 1064.18 C 1337.33 K Gold freezing point 961.78 C 1234.93 K Silver freezing point Training and consulting services We offer our know how in calibration of temperature and density of many years to make sure that your measurement is correct. Calibration rules and measuring techniques are taught in individual courses organized on your premises or ours. Customers can compile the curriculum for themselves ranging from measurement basics through to the preparation of fixedpoint cells. LSM will also put together measurement uncertainty budgets and advise you on DIN EN ISO/IEC 17025 requirements. We will assist you in the definition of measurement systems and in carrying out your own calibrations. Consultation Calibration in our laboratory and on-site Optimal setup for measurement Selection of inspection, measuring and testing equipment (from almost all manufacturers) Training Basics of temperature measurement Terms and definitions: measurement, calibration, validation, testing, etc. Calibration process and guide lines Reference standards and recalibration Determination uncertainties of measurement results Calculation of individual uncertainties Documentation of calibration results (conformity, recognition of manufacturer specification) ISO ASTM BSDIN 419.527 C 92.73 K Zinc freezing point 100.00 C 373.15 K Water boiling point 0.01 C 273.16 K Water triple point -38.8344 C 234.3156 K Mercury triple point -218.7916 C 54.361 K Oxygen triple point -259.3467 C 13.81 K Hydrogen triple point -273.15 C 0 K Absolute zero ITS 90 The international temperature scale Worldwide recognition International clients from the chemical, medical, pharmaceutical sectors and from a variety of industries and R&D institutes value highly LSM s calibration services. United under the International Laboratory Accreditation Cooperation (ILAC), 52 nations at present have contractually agreed to mutually accept the calibration results of the signatories accredited calibration laboratories according to DIN EN ISO/IEC 17025. Ludwig Schneider Messtechnik GmbH Postfach 15 61 97865 Wertheim Am Eichamt 4 97877 Wertheim Tel.: +49-93 42-85 60-0 Fax: +49-93 42-8 43 99 e-mail: dakks@ludwig-schneider.de www.dakks-lsm.de www.ludwig-schneider.com As a DAkkS calibration laboratory, Ludwig Schneider Messtechnik enjoys international recognition and fully complies with the requirements of DIN EN ISO/IEC 17025.